Numerous detailed proofs highlight this treatment of functional equations. Starting with equations that can be solved by simple substitutions, the book then mov

Functional equations provides mathematics teachers with an introduction to elementary aspects of functional equations. These equations are linked to function in

Recently I taught short courses on functional equations at several universities (Barcelona, Bern, Graz, Hamburg, Milan, Waterloo). My aim was to introduce the m

This treatise deals with modern theory of functional equations in several variables and their applications to mathematics, information theory, and the natural,